Upshot? When it comes to selling apps, there's a lot of money at stake.

Enter SweetLabs, one of the most successful app distribution networks, a.k.a. app stores, that you probably never heard of. It helps PC users find Windows apps, and it recently expanded to Android as well.

SweetLabs is an unusual company. Six years ago, when everyone was rushing toward iOS, it bet on Windows. It gained some fame when it created a Start Menu for Windows 8 called Pokki, partnering with Lenovo and other PC makers to add Pokki to their PCs.

That was a big risk. Windows PCs known for coming pre-loaded with annoying apps people don't want, called "bloatware." Microsoft stores even offer a service called Signature that removes unwanted apps from Windows machines.

So SweetLabs was aligning itself with that yucky trend.

And it paid off. As of 2014, SweetLabs has installed 750 million apps, currently at installing a rate of about 1 million a day, co-founder and CMO, Chester Ng, recently told Business Insider.

It's doing for Windows device makers what Apple, Microsoft, Facebook and, most recently, Twitter are doing for themselves, giving them app stores where they can get a cut of the profits. It's customers include Lenovo, Toshiba, Acer, HP. App developers can also pay to have their app included.

And it recently expanded into the Android market with a new service it calls App Install Platform.

Business Insider: So you say you're in the business of solving the bloatware problem, not causing it. How's that?

Ng: Think about anyone that makes a device a PC or Android tablet. To differentiate, they put a bunch of software on their machines. Been the model for almost two decades and it's really backwards. They put 50 apps on these machines ... there's no targeting, no analytics. They put the same apps on all of these machines at the factory. We provide an alternative, "dynamic app recommendations" show the right app to the right developer at the right time.

It also provides a personalized app store. It recommends apps to you based on what you like, what you don't like.

Ng: When Windows 8 came out, we were one of the loudest opinions about the first version of Windows 8 and questions about Metro. We did a video with Chris Pirillo about how normal people react to Windows 8. We haven't been shy about our opinions.

We're a startup that bet on the PC when everybody wasn't. We want Windows 8 and Windows to succeed. There are 1 billion people sit in front of their PCs all day long and they want apps.

Certainly there have been challenges with Windows 8. But it feels like things are turning around in the right direction. We came out of Microsoft Build [it's developer conference in May] feeling a lot better than last several years.